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贻贝仿生三维石墨烯制备及对亚甲基蓝的吸附

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刘怡虹, 周廷尧, 胡蓉, 许德超, 彭盛华, 尹魁浩. 贻贝仿生三维石墨烯制备及对亚甲基蓝的吸附[J]. 环境化学, 2018, 37(11): 2540-2547. doi: 10.7524/j.issn.0254-6108.2018011101
引用本文: 刘怡虹, 周廷尧, 胡蓉, 许德超, 彭盛华, 尹魁浩. 贻贝仿生三维石墨烯制备及对亚甲基蓝的吸附[J]. 环境化学, 2018, 37(11): 2540-2547. doi: 10.7524/j.issn.0254-6108.2018011101
shu
LIU Yihong, ZHOU Tingyao, HU Rong, XU Dechao, PENG Shenghua, YIN Kuihao. Synthesis of mussel-inspired three-dimensional graphene materials and their application in methylene blue adsorption[J]. Environmental Chemistry, 2018, 37(11): 2540-2547. doi: 10.7524/j.issn.0254-6108.2018011101
Citation: LIU Yihong, ZHOU Tingyao, HU Rong, XU Dechao, PENG Shenghua, YIN Kuihao. Synthesis of mussel-inspired three-dimensional graphene materials and their application in methylene blue adsorption[J]. Environmental Chemistry, 2018, 37(11): 2540-2547. doi: 10.7524/j.issn.0254-6108.2018011101
shu

贻贝仿生三维石墨烯制备及对亚甲基蓝的吸附

  • 1.

    国家环境保护饮用水水源地管理技术重点实验室, 深圳市饮用水水源地安全保障重点实验室, 深圳市水环境中新型污染物检测与控制重点实验室, 深圳市环境科学研究院, 深圳, 518001;

  • 2.

    华南理工大学化学与化工学院, 广州, 510640

  • 基金项目:

    深圳市科技计划基础研究项目（JCYJ20150730155600636）资助.

Synthesis of mussel-inspired three-dimensional graphene materials and their application in methylene blue adsorption

  • 1.

    State Environmental Protection Key Laboratory of Drinking Water Source Management and Technology, Shenzhen Key Laboratory of Drinking Water Source Safety Control, Shenzhen Key Laboratory of Emerging Contaminants Detection & Control in Water Environment, Shenzhen Research Academy of Environmental Sciences, Shenzhen, 518001, China;

  • 2.

    School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China

  • Fund Project: Supported by Basic Research Project of Shenzhen Science and Technology Plan(JCYJ20150730155600636).

  • 摘要: 受海洋生物贻贝的启发，利用多巴胺（DA）自聚合作用将氧化石墨烯自组装成三维（3D）石墨烯材料，并对亚甲基蓝（MB）的吸附行为进行研究.结果显示，3D石墨烯材料具有多孔网络结构，孔径约为0.5 μm到几十μm，对MB具有良好的吸附性能，最大吸附量为752 mg·g-1，对MB分子是单分子层吸附，吸附行为符合Langmuir等温吸附和准二级反应动力学方程.通过颗粒内扩散模型对其吸附的扩散机理进行研究，发现吸附初期为外表面扩散吸附，后期为孔道缓慢扩散过程.3D石墨烯对MB吸附具有较好的可再生能力，经过5次的吸附-脱附实验，对MB的去除效率降低20.9%.通过考察其对实际水样中MB的吸附效果，3D石墨烯材料表现出较好的实际应用能力，去除效率均在89%以上.
    Abstract: Inspired by marine mussel, three-dimensional (3D) graphene materials were prepared through the self-assembly of graphene oxide in the presence of dopamine (DA), and the adsorption experiments were performed to investigate the adsorption behavior of the 3D grapheme materials for methylene blue (MB). The results suggested that the 3D graphene materials exhibited a porous network structure with the pore size ranging from 0.5 to tens of micrometers, and displayed adsorption capacity as high as 752 mg·g-1 for MB. The adsorption behavior followed Langmuir adsorption isotherm and pseudo-second-order kinetic model, indicating that the adsorption process was mainly a monolayer process. The intraparticle diffusion model was also used to investigate the diffusion mechanism of the adsorption behavior. The initial adsorption stage resulted from the external surface diffusion, and the later stage represented a gradual intraparticle diffusion. The 3D graphene materials offered excellent reproducible ability, as the removal efficiency decreased only by about 20.9% after 5 cycles of adsorption-desorption experiments. The 3D graphene materials also exhibited good practical application ability with MB removal efficiency of 89% in real samples.
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  • 收稿日期:  2018-01-11
  • 刊出日期:  2018-11-15
刘怡虹, 周廷尧, 胡蓉, 许德超, 彭盛华, 尹魁浩. 贻贝仿生三维石墨烯制备及对亚甲基蓝的吸附[J]. 环境化学, 2018, 37(11): 2540-2547. doi: 10.7524/j.issn.0254-6108.2018011101
引用本文: 刘怡虹, 周廷尧, 胡蓉, 许德超, 彭盛华, 尹魁浩. 贻贝仿生三维石墨烯制备及对亚甲基蓝的吸附[J]. 环境化学, 2018, 37(11): 2540-2547. doi: 10.7524/j.issn.0254-6108.2018011101
shu
LIU Yihong, ZHOU Tingyao, HU Rong, XU Dechao, PENG Shenghua, YIN Kuihao. Synthesis of mussel-inspired three-dimensional graphene materials and their application in methylene blue adsorption[J]. Environmental Chemistry, 2018, 37(11): 2540-2547. doi: 10.7524/j.issn.0254-6108.2018011101
Citation: LIU Yihong, ZHOU Tingyao, HU Rong, XU Dechao, PENG Shenghua, YIN Kuihao. Synthesis of mussel-inspired three-dimensional graphene materials and their application in methylene blue adsorption[J]. Environmental Chemistry, 2018, 37(11): 2540-2547. doi: 10.7524/j.issn.0254-6108.2018011101
shu

贻贝仿生三维石墨烯制备及对亚甲基蓝的吸附

  • 1.  国家环境保护饮用水水源地管理技术重点实验室, 深圳市饮用水水源地安全保障重点实验室, 深圳市水环境中新型污染物检测与控制重点实验室, 深圳市环境科学研究院, 深圳, 518001;
  • 2.  华南理工大学化学与化工学院, 广州, 510640
  • 收稿日期:  2018-01-11
基金项目:

深圳市科技计划基础研究项目（JCYJ20150730155600636）资助.

摘要: 受海洋生物贻贝的启发，利用多巴胺（DA）自聚合作用将氧化石墨烯自组装成三维（3D）石墨烯材料，并对亚甲基蓝（MB）的吸附行为进行研究.结果显示，3D石墨烯材料具有多孔网络结构，孔径约为0.5 μm到几十μm，对MB具有良好的吸附性能，最大吸附量为752 mg·g-1，对MB分子是单分子层吸附，吸附行为符合Langmuir等温吸附和准二级反应动力学方程.通过颗粒内扩散模型对其吸附的扩散机理进行研究，发现吸附初期为外表面扩散吸附，后期为孔道缓慢扩散过程.3D石墨烯对MB吸附具有较好的可再生能力，经过5次的吸附-脱附实验，对MB的去除效率降低20.9%.通过考察其对实际水样中MB的吸附效果，3D石墨烯材料表现出较好的实际应用能力，去除效率均在89%以上.

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